sd/source/ui/presenter/CanvasUpdateRequester.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef SD_PRESENTER_CANVAS_UPDATE_REQUESTER_HEADER
  21 #define SD_PRESENTER_CANVAS_UPDATE_REQUESTER_HEADER
  22
  23
  24 #include <com/sun/star/rendering/XSpriteCanvas.hpp>
  25 #include <boost/noncopyable.hpp>
  26 #include <boost/shared_ptr.hpp>
  27 #include <sal/types.h>
  28 #include <tools/solar.h>
  29 #include <tools/link.hxx>
  30 #include <vector>
  31
  32 namespace sd { namespace presenter {
  33
  34 /** Each UpdateRequester handles update requests (calls to
  35     XCanvas::updateScreen()) for one shared canvas (a canvas that has one or
  36     more PresenterCanvas wrappers).  Multiple calls are collected and lead
  37     to a single call to updateScreen.
  38 */
  39 class CanvasUpdateRequester : private ::boost::noncopyable
  40 {
  41 public:
  42     /** @return the Canvas UpdateRequester object for the given shared canvas.
  43                 A new object is created when it does not already exist.
  44     */
  45     static ::boost::shared_ptr<CanvasUpdateRequester> Instance (
  46         const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
  47
  48     void RequestUpdate (const sal_Bool bUpdateAll);
  49
  50 private:
  51     CanvasUpdateRequester (const css::uno::Reference<css::rendering::XSpriteCanvas>& rxCanvas);
  52     ~CanvasUpdateRequester (void);
  53     class Deleter; friend class Deleter;
  54
  55     typedef ::std::vector<
  56         ::std::pair<
  57             css::uno::Reference<css::rendering::XSpriteCanvas>,
  58            ::boost::shared_ptr<CanvasUpdateRequester> > > RequesterMap;
  59     static RequesterMap maRequesterMap;
  60
  61     css::uno::Reference<css::rendering::XSpriteCanvas> mxCanvas;
  62     sal_uLong mnUserEventId;
  63     sal_Bool mbUpdateFlag;
  64     DECL_LINK(Callback, void*);
  65 };
  66
  67 } } // end of namespace ::sd::presenter
  68
  69 #endif
  70
  71 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */